161015727495 has 24 divisors (see below), whose sum is σ = 299686416624. Its totient is φ = 73607189376.

The previous prime is 161015727463. The next prime is 161015727569. The reversal of 161015727495 is 594727510161.

It is not a de Polignac number, because 161015727495 - 2⁵ = 161015727463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109533774 + ... + 109535243.

It is an arithmetic number, because the mean of its divisors is an integer number (12486934026).

Almost surely, 2^161015727495 is an apocalyptic number.

161015727495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161015727495 is a deficient number, since it is larger than the sum of its proper divisors (138670689129).

161015727495 is a wasteful number, since it uses less digits than its factorization.

161015727495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219069039 (or 219069032 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 161015727495 in words is "one hundred sixty-one billion, fifteen million, seven hundred twenty-seven thousand, four hundred ninety-five".